Safety attachment for drop-forging and stamping machines.



J. R. Hu'sGms. SAFETY ATTACHMENT FOR DROP FORGING AND STAMPING MACHINES.

APPLICATION FILED OCT. 23. I916- gately ed Feb. 19, 1918. Q

JOHN ROBERT HUGGINS, OI CANTON, OHIO.

SAFETY ATTACHMENT FOR, DROP-FORGING AND STAMPING MACHINES.

Specification of Letters Patent.

Application filed October 23, 1916. Serial No. 127,300.

To all whom it may concern:

Be it known that I, JOHN ROBERT HUG- GINS, a citizen of the UnitedStates, residing at Canton, in the county of Stark and State of Ohio,have invented certain new and useful Improvements in Safety Attachmentsfor Drop-Forging and Stamping Machines; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the letters and figures of reference marked thereon, which form apart of this specification.

This invention relates to new and useful improvements in safety devicesfor attachment to drop forge stamping machines and the object in view isto produce a simple and efficient device of this nature so arranged andactuated that the hands of an operator will be thrown away from thestamping machine when the head of the press is thrown toward the die.

The invention consists of a simple and efficient apparatus of thisnature having various details of construction and combinations andarrangements of parts which will be hereinafter fully described, shownin the accompanying drawings and then specifically defined in theappended claim.

I illustrate my invention in the accompanying drawings, in which Figure1 is a front elevation showing the application of the invention to astamping press.

Fig. 2 is a front elevation of the safety device detached.

Fig. 3 is a view at right angles to Fig. 2.

Reference now being had to the details of the drawings by letter, Adesignates a bar having an elongated slot B therein adapted to receiveset screws O which are fastened to the frame of the press and which holdthe bar A in different adjusted positions. The lower portion of the barhas a laterally extending arm D carrying a pin E. F is a bell cranklever having an elongated slot H in one arm, in which the pin E has aplay. Said bell crank lever is pivotally connected at its angle with apin or stud I which is fastened to the front of the reciprocating head Kof the press. One arm of the lever F carries the set screws N which passthrough the elongated slot O of the bar S, the latter being held indifferent adjusted positions relative to the arm through the medium ofset screws N. One end of the bar S has a rearwardly extending finger Twhich is adapted to have a laterally Patented Feb. 19. 1918. p

swinging motion as the head of the press is raised and lowered.

In operation, the parts of my safety attachment are fastened to theframe and press head in the manner shown in Fig. 1 of the drawings and,as the head of the press is raised, the adjustable bar S is swung to aposition shown in solid lines in Fig. 1 and, on the downward throw ofthe press head, the bell crank lever F will tilt upon the stud or pin Iand the bar S with finger T will swing laterally for the purpose ofthrowing the hand of the operator away from the die during the operationof the machine. It will he noted that the device is automatic in itsaction and, when the press head is raised, the adjustable bar S will beout of the way of the operator.

IVhat I claim to be new is In combination with a drop forging andstamping machine, comprising a frame with a reciprocating cross head, aright-angled bar having an elongated slot therein, and means foradjustably mounting the same upon said frame with one end projectinglaterally beyond the inner edge of said frame and provided with a boss,a bell crank lever having an elongated slot in one arm, a pin carried bysaid projecting end and passing through and having a sliding movement insaid slot, a stud secured to said cross head and having pivotalconnection with said bell crank lever, and a slotted bar having arearwardly extending finger adjust-ably secured to the other arm of saidbell crank lever.

In testimony whereof I hereunto afiix my signature in presence of twowitnesses.

JOHN ROBERT HUGGINS. IVitnesses ARTHUR U. BORDNER, HENRY B. MCLAUGHLIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

